A Maryland single-member LLC operating agreement is a legal document used by a sole proprietor of a limited liability company to formally establish ownership, management, and internal procedures. Although Maryland does not have any laws requiring companies to implement an operating agreement, it helps to protect the owner from any potential exposure to company-related litigation or financial obligations. In addition, if the company wants to seek investors, additional members, or business loans, having an operating agreement in place extends an extra layer of credibility to the counterpart. Because the document only has one signatory, it is recommended that the owner sign it in the presence of a notary public.